00424nam a2200145Ia 4500008004100000020001500041082001400056100001800070245002500088260005900113300000800172650003800180650003400218653002600252170901s1977    xx            000 0 und d  a0852983468  a660bS28A  aSemler, E. G. 0aAdvancing Technology  aLondonbMechanical Engineering Publications Ltd.c1977  a182  aChemical and Related Technologies  aTechnology (Applied sciences)  aIndustrial technology